Growing in bed and along margins of acid gravel stream draining Calluna/grass heathland.
No interactions present.
Persicaria amphibia has pinnately-veined leaves; Polygonatum natans has parallel-veined leaves.
Lat/Lng: 50.927, -1.7418
OS grid ref: SU182142
Ditchend and Black Gutter brooks across New Forest from source down to farmland. In open heath and under pine/oak woodland. On gravel and silt.